package com.atguigu.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.atguigu.common.constant.ProductConstant;
import com.atguigu.common.to.SkuHasStockVo;
import com.atguigu.common.to.SkuReductionTo;
import com.atguigu.common.to.SpuBoundTo;
import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.common.utils.R;
import com.atguigu.gulimall.product.entity.*;
import com.atguigu.gulimall.product.fegin.CouponFeignService;
import com.atguigu.gulimall.product.fegin.SearchFeignService;
import com.atguigu.gulimall.product.fegin.WareFeignService;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.*;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.SpuInfoDao;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.util.StringUtils;



@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    SearchFeignService searchFeignService;

    @Autowired
    WareFeignService wareFeignService;
    @Autowired
    BrandService brandService;

    @Autowired
    CategoryService categoryService;

    @Autowired
    SpuInfoDescService spuInfoDescService;

    @Autowired
    SpuImagesService spuImagesService;

    @Autowired
    ProductAttrValueService productAttrValueService;

    @Autowired
    AttrService attrService;

    @Autowired
    SkuInfoService skuInfoService;

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    CouponFeignService couponFeignService;
    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional(rollbackFor = Exception.class)
    @Override
    public void saveSpuInfo(SpuSaveVo vo) {
        // spu 基本信息 pms_spu_info
        SpuInfoEntity spuInfoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo,spuInfoEntity);
        spuInfoEntity.setCreateTime(new Date());
        spuInfoEntity.setUpdateTime(new Date());
        this.saveBaseSpuInfo(spuInfoEntity);

        // spu 描述图片 pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity spuInfoDescEntity = new SpuInfoDescEntity();
        spuInfoDescEntity.setSpuId(spuInfoEntity.getId());
        spuInfoDescEntity.setDecript(String.join(",",decript));
        spuInfoDescService.saveSpuInfoDesc(spuInfoDescEntity);

        // spu 图片集 pms_spu_images
        List<String> images = vo.getImages();
        spuImagesService.saveImages(spuInfoEntity.getId(),images);

        // spu 规格参数 pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> collect = baseAttrs.stream().map((item) -> {
            ProductAttrValueEntity productAttrValueEntity = new ProductAttrValueEntity();
            productAttrValueEntity.setAttrId(item.getAttrId());
            AttrEntity attrEntity = attrService.getById(item.getAttrId());
            productAttrValueEntity.setAttrName(attrEntity.getAttrName());
            productAttrValueEntity.setAttrValue(item.getAttrValues());
            productAttrValueEntity.setQuickShow(item.getShowDesc());
            productAttrValueEntity.setSpuId(spuInfoEntity.getId());
            return productAttrValueEntity;
        }).collect(Collectors.toList());
        productAttrValueService.saveProductAttr(collect);



        // spu 积分信息 sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundTo spuBoundTo = new SpuBoundTo();
        spuBoundTo.setBuyBounds(bounds.getBuyBounds());
        spuBoundTo.setGrowBounds(bounds.getGrowBounds());
        spuBoundTo.setSpuId(spuInfoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundTo);
        if (r.getCode() != 0){
            log.error("远程保存spu积分信息失败");
        }

        // spu sku信息
        List<Skus> skus = vo.getSkus();
        if (skus!=null && skus.size()>0){
            skus.stream().forEach(item -> {
                String defaultImg = "";
                for (Images image : item.getImages()) {
                    if(image.getDefaultImg() == 1){
                        defaultImg = image.getImgUrl();
                    }
                }
                // sku 基本信息 pms_sku_info
                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                //    private String skuName;
                //    private BigDecimal price;
                //    private String skuTitle;
                //    private String skuSubtitle;
                BeanUtils.copyProperties(item,skuInfoEntity);
                skuInfoEntity.setSpuId(spuInfoEntity.getId());
                skuInfoEntity.setCatalogId(spuInfoEntity.getCatalogId());
                skuInfoEntity.setBrandId(spuInfoEntity.getBrandId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSkuDefaultImg(defaultImg);
                skuInfoService.saveSkuInfo(skuInfoEntity);

                Long skuId = skuInfoEntity.getSkuId();

                // sku 图片信息 pms_sku_images
                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map((img) -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(entity->{
                    //返回true就是需要，false就是剔除
                    return !StringUtils.isEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());
                skuImagesService.saveBatch(imagesEntities);

                // sku 销售属性 pms_sku_sale_attr_value
                List<Attr> attr = item.getAttr();
                 List<SkuSaleAttrValueEntity> collect1 = attr.stream().map((a) -> {
                    SkuSaleAttrValueEntity skuSaleAttrValueEntities = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, skuSaleAttrValueEntities);
                    skuSaleAttrValueEntities.setSkuId(skuId);
                    return skuSaleAttrValueEntities;
                }).collect(Collectors.toList());

                skuSaleAttrValueService.saveBatch(collect1);
                // sku 优惠 满减信息
                SkuReductionTo skuReductionTo = new SkuReductionTo();
                BeanUtils.copyProperties(item,skuReductionTo);
                skuReductionTo.setSkuId(skuId);
                if(skuReductionTo.getFullCount() >0 || skuReductionTo.getFullPrice().compareTo(new BigDecimal("0")) == 1){
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTo);
                    if(r1.getCode() != 0){
                        log.error("远程保存sku优惠信息失败");
                    }
                }
                // sms_sku_ladder、
                // sms_sku_full_reduction、
                // sms_member_price、

            });
        }

    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        /*
        * {
               page: 1,//当前页码
               limit: 10,//每页记录数
               sidx: 'id',//排序字段
               order: 'asc/desc',//排序方式
               key: '华为',//检索关键字
               catelogId: 6,//三级分类id
               brandId: 1,//品牌id
               status: 0,//商品状态
          }
        */

        QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();

        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            wrapper.and((w)->{
                w.eq("id",key).or().like("spu_name",key);
            });
        }
        // status=1 and (id=1 or spu_name like xxx)
        String status = (String) params.get("status");
        if(!StringUtils.isEmpty(status)){
            wrapper.eq("publish_status",status);
        }

        String brandId = (String) params.get("brandId");
        if(!StringUtils.isEmpty(brandId)&&!"0".equalsIgnoreCase(brandId)){
            wrapper.eq("brand_id",brandId);
        }

        String catelogId = (String) params.get("catelogId");
        if(!StringUtils.isEmpty(catelogId)&&!"0".equalsIgnoreCase(catelogId)){
            wrapper.eq("catalog_id",catelogId);
        }

        /**
         * status: 2
         * key:
         * brandId: 9
         * catelogId: 225
         */

        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                wrapper
        );

        return new PageUtils(page);
    }

    /**
     * 商品上架
     * @param spuId
     */
    @Override
    public void up(Long spuId) {

        // 1 查出当前spuid对应的所有sku信息，品牌名
        List<SkuInfoEntity> skus = skuInfoService.getSkuBySpuId(spuId);

        List<Long> skuIdList = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());

        // 4 查询当前sku的所有可以被用来检索的规格属性
        // 查全部
        List<ProductAttrValueEntity> baseAttrs = productAttrValueService.baseAttrlistforspu(spuId);
        List<Long> attrIds = baseAttrs.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        // 查出 是否需要检索 的详细属性
        List<Long> searchAttrIds = attrService.selectSearchAttrIds(attrIds);
        Set<Long> idSet = new HashSet<>(searchAttrIds);

         // 从baseAttrs 过滤不需要的规格属性 封装成SkuEsModel.Attrs
         List<SkuEsModel.Attrs> attrsList = baseAttrs.stream().filter(item -> {
                    return idSet.contains(item.getAttrId());
                }
        ).map(item -> {
            SkuEsModel.Attrs attrs1 = new SkuEsModel.Attrs();
            BeanUtils.copyProperties(item, attrs1);
            return attrs1;
        }).collect(Collectors.toList());

         // 远程调用 feign
        Map<Long, Boolean> stockMap = null;
        try {
            R r = wareFeignService.getSkuHasStock(skuIdList);
            TypeReference<List<SkuHasStockVo>> typeReference = new TypeReference<List<SkuHasStockVo>>() {
            };
            stockMap = r.getData(typeReference).stream().collect(Collectors.toMap(SkuHasStockVo::getSkuId,item->item.getHasStock()));
        }catch (Exception e){
            log.error("库存服务查询异常：原因{}", e);
        }

        // 封装每个sku的信息
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skus.stream().map(item -> {
            // 2 封装每个sku信息
            SkuEsModel skuEsModel = new SkuEsModel();
            BeanUtils.copyProperties(item, skuEsModel);

            skuEsModel.setSkuPrice(item.getPrice());
            skuEsModel.setSkuImg(item.getSkuDefaultImg());
            skuEsModel.setHotScore(0L);

            // 3 查询品牌和分类名字
            BrandEntity brandEntity = brandService.getById(item.getBrandId());
            skuEsModel.setBrandName(brandEntity.getName());
            skuEsModel.setBrandImg(brandEntity.getLogo());

            CategoryEntity categoryEntity = categoryService.getById(item.getCatalogId());
            skuEsModel.setCatalogName(categoryEntity.getName());

            skuEsModel.setAttrs(attrsList);
            if (finalStockMap == null){
                skuEsModel.setHasStock(true);
            }else {
                skuEsModel.setHasStock(finalStockMap.get(item.getSkuId()));
            }
            return skuEsModel;
        }).collect(Collectors.toList());

        // 5 将数据发送给es进行保存 gulimall-search
        R r = searchFeignService.productStatusUp(upProducts);
        if (r.getCode() == 0) {
            // 远程调用成功
            // TODO:6、修改当前spu的状态
            /**
             * 1、构造请求数据，将对象转为json
             *    RequestTemplate template = buildTemplateFromArgs.create(argv);
             * 2、发送请求进行执行,执行成功会解码响应数据
             *    executeAndDecode(template, options)
             * 3、执行请求会有重试机制
             *    while (true) {
             *      try {
             *           retryer.continueOrPropagate(e);
             *      }catch(){
             *          try{retryer.continueOrPropagate(e);}catch(){throw e;}
             *          continue;
             *      }
             *    }
             *
             *
             */

            this.baseMapper.updateSpuStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        } else {
            // 远程调用失败
            // TODO:7、重复调用？接口幂等性；重试机制？
        }
    }

    @Override
    public SpuInfoEntity getSpuInfoBySkuId(Long skuId) {
        SkuInfoEntity skuInfoEntity = skuInfoService.getById(skuId);
        Long spuId = skuInfoEntity.getSpuId();
        SpuInfoEntity spuInfoEntity = getById(spuId);
        return spuInfoEntity;
    }


    private void saveBaseSpuInfo(SpuInfoEntity spuInfoEntity) {
        this.baseMapper.insert(spuInfoEntity);
    }

}